It is possible if you spend enough time and money on the game. Those HCS packs are there to support the HCS league and Teams. The only way you can get Achilles is by having a company of Four or higher and enough time and effort put into it. You basically...

Add more AI assassinations maybe one for Hunters like when their back is exposed a lot more your character starts ripping out the worms and clawing at them, like a cat and its yarn ball. Something I really want to see is HUNTER ASSASSINATIONS. we have it...